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Your agent didn't fail. You closed the lid

SleepSwitch is a macOS menu bar toggle that stops your Mac from sleeping — lid closed included. One click, no password prompts, and a battery guard…

Let AI Write the Mac OS App Without Learning Swift

AI keeps accelerating through the tech industry. Just like many other laid-off tech workers, I feel little miserable how far has AI really affected…

Swift 6 turned working code into a compile error and iOS devs are furious

Everything was working perfectly fine in your application for multiple years. Then one day a simple configuration change of a flag resulted in over…

I ship iOS apps to the App Store without owning a Mac, using GitHub Actions' free macOS runners

I don't own a Mac. When I built my last iOS app (Citolex, a speed reading app with a couple of native Swift plugins), I didn't want to buy one or pa…

Swift ARC Doesn’t Scan the Heap — I Removed strong_release from SIL to Prove It

Also available: Korean version · Source code and reproducible experiments A source-to-runtime experiment with Swift 6.3.1: inspect ownership in SIL,…

Breaking Up Big SwiftUI Views the Right Way

Why computed properties help readability, what @ViewBuilder actually does, and when a separate View type matters Every SwiftUI codebase eventually g…

Swift 6 Strict Concurrency: 4 Migration Mistakes and How to Fix Them

I enabled Swift 6 mode on a project I'd been shipping for two years. Sixty-plus errors. My first reaction was to roll it back. I'm glad I didn't. At…

I gave my coding agent its own computer

I run coding agents with shell access all day, and for a long time there was a low-grade dread underneath it. The permission prompts get annoying en…

How I Built an AI-Powered Reel & Short Maker in Swift: Handling Auto-Cutouts & Beat-Syncing Efficiently

Hey DEV community! 👋 As an indie iOS developer, I’ve always been fascinated by short-form video algorithms and how visual retention works. Over the…

Apple quietly shipped everything you need to build a real-time translator — so I built one

I work at a German company. Meetings are in German, sometimes English — and even though I speak both, there are moments in fast meetings where I zon…

Controlling a treadmill from an iPhone over Bluetooth LE

Most treadmills have a Bluetooth chip and a companion app nobody enjoys using. I wanted to drive the treadmill - speed, incline, live stats - from a…

AVCaptureMultiCamSession: the real limits, and why the stock Camera app doesn't offer dual recording

Modern iPhones can genuinely run the front and back cameras at the same time. AVCaptureMultiCamSession has been in the SDK since iOS 13 and works on…

The three hard constraints of an iOS keyboard extension

A custom keyboard on iOS looks like a small UIKit app. It is not. It is a UIInputViewController living inside an extension process with rules that n…

the forgotten engine and the error message that taught a betrayal

this isn't a marketing story. nothing here is dressed up — it's reconstructed from actual session transcripts and actual commit history. every date…

Swift Protocols — Opaque Return Types and the Mystery of `some` 🔮

You've seen some View in every SwiftUI file you've ever opened. Now let's find out what it actually means, why it exists, and why returning a plain…

Understanding MVVM by Building a Simple Weather App with SwiftUI

MVVM with swiftUI When learning SwiftUI, one of the first architectural patterns you'll encounter is MVVM (Model-View-ViewModel). In this tutorial,…

Swift Protocols — The Art of Making Promises 🤝

Protocols let you define what a type can do without caring about what it actually is. Once that clicks, a huge chunk of Swift and SwiftUI starts mak…

Seeking 20 TestFlight beta testers — MarkdownVault (local encrypted web-to-Markdown on iOS)

I'm building MarkdownVault , a native iOS app that saves web pages as encrypted Markdown on-device — no cloud sync, no tracking. We're entering a Te…

Teaching a Local AI Agent to Search the Web (Without Lying to You)

Back in early May, someone on the team said something like "let's just add web search, shouldn't take more than a day." Three months and roughly twe…

CamBridge: giving the iOS Simulator a real, moving camera image

The problem Neither the iOS Simulator nor the Android Emulator has real camera hardware. If you're building anything that touches AVCaptureSession —…

Supporting Multiple iOS Versions in SwiftUI Without Turning Your Views Into a Mess

Supporting Multiple iOS Versions in SwiftUI Without Turning Your Views Into a Mess One of the nicest things about SwiftUI is how quickly it evolves.…

WWDC’26 Viewing Guide

I've been following WWDC since 2011* and over the years I've developed my own process for watching sessions. Over the past 15 years, I've gone throu…

Starling, a Linux Desktop written from scratch

I built a screen time blocker that has no account, no server, and no idea who you are

I was doomscrolling about three hours a day. Not "checking my phone a lot" — three hours, measured, on a screen time report I didn't want to look at…

The Crash That Only Happened Sometimes — A SwiftUI Bug

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . I spent three hours debugging a SwiftUI crash that felt completel…

Show DEV: NotchTune v1.2 - a Tiny Notch App to Control Spotify Web

Hey DEV community! 👋 A few days ago I shared NotchTune here — a tiny native macOS app that turns your MacBook's notch into a live Spotify Web contro…

Swift Classes — The Four Ways Variables and Constants Can Combine 🎭

A constant class can have its properties changed. A constant struct can't. This sounds inconsistent until you remember the signpost — and then it ma…

I built SwiftNotch: a productivity dashboard for the MacBook notch

The notch on a MacBook is strange real estate. It is always there. It sits at the top of the screen, close to the menu bar, close to system controls…

Snap 8 Windows into a Grid on an Ultrawide in One Command — a Swift + AppleScript Convergence Loop and 5 Traps

This is part of my "Claude Code environment" series. Last time, in The Environment-Degradation Sentinel , I wrote about self-diagnosing a Claude Cod…

Swift Classes — Deinitializers and How Swift Cleans Up After Itself 🧹

Every class instance is eventually destroyed. Swift gives you a way to know exactly when that happens — and the story of how it decides when to pull…